Understanding Tennis

under gather on the racquet

add band work to your routines

use more box

attack the short ball

when the toss goes up take the one step-in

get the toss in front of you so you can use all of your  body weight

when the ball is at your body get out of the way

put the racquet face up to preset the wrist action

Dennis  does a cross over dribble 

square up the hit point in front of the body